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Glass bead product
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Patent number 4,113,915
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Issue date Sep 12, 1978
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Charles W. Schott
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3907537
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Patent number 3,907,537
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Issue date Sep 23, 1975
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3877914
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Patent number 3,877,914
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Issue date Apr 15, 1975
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C03 - GLASS MINERAL OR SLAG WOOL
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3877918
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Patent number 3,877,918
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Issue date Apr 15, 1975
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C03 - GLASS MINERAL OR SLAG WOOL
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3856899
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Patent number 3,856,899
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Issue date Dec 24, 1974
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B22 - CASTING POWDER METALLURGY
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3694528
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Patent number 3,694,528
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Issue date Sep 26, 1972
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B22 - CASTING POWDER METALLURGY
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3597176
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Patent number 3,597,176
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Issue date Aug 3, 1971
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C03 - GLASS MINERAL OR SLAG WOOL
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3594142
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Patent number 3,594,142
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Issue date Jul 20, 1971
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C21 - METALLURGY OF IRON
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3579720
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Patent number 3,579,720
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Issue date May 25, 1971
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C03 - GLASS MINERAL OR SLAG WOOL
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3499745
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Patent number 3,499,745
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Issue date Mar 10, 1970
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C03 - GLASS MINERAL OR SLAG WOOL